Throttle-valve for rock-drills.



I n. s. WAUGH. THROTTLE VALVE FOB. ROCK DRILLS'.

APPLICATION TILED OCT 18 1909 "Patented May 30, 191.1.

\ 2 SHEETS-SHBBT 1.

WITNESSE$ INVENTOR,

Al/omey D. S. W'AUGH. THROTTLE VALVE FOR BOOK DBILLS.

APPLICATION FILED OCT. 18, 1909.

Patented May 30, 1911.

2 SHEETS-SHEET 21 WITNESSES eeaaea.

DANIEL S. 'WAUG-H, DENVER, COLORADO,

ACHINERY COMPANY, 01? DENVER, COLOBADO.

ASSIGNOR TO THE DENVER BOOK DRILL '&

THROTTLE-VALVE non ROCK-DRILi-S.

To all whom it may concern:

Be it known that I, DANIEL S. WAUGH, a

citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented certain new and useful Improvements in Throttle-Valves for Rock-Drills, of which the following is a specification.

ple structure which will also constitute antomatic means the motor. I

The prefepred form of construction is illustrated in the accompanying drawings,

for delivering lubricant to 1 wherein Figure 1 is aperspective view of the device. Fig. 2 is a sectional view therethrough showing the valve in closed position. Fig. 3 is a similar view illustrating the valve 'in opened position Fig. 4; is a sectional viewon the line 4-4 of-Fig. 3, Figs. 2 and 3 be ing sectional views on. the line 5-5 ofFig.

4-. Fig.' 5-is a detail sectional view on the line 6-43 of Fig. 4. Fig. 6 is a view in elevation of the casing. Fig. .7 is a detail perspective view of the valve. ig. 8 is aplan view partially in section, illustrating one form. of connection between the valve and a motor. 5

Similar reference numerals designate cor: responding parts in all the figures of the drawings.

In the embodiment disclosed, an outer casing 9 is employed that is preferably a single casting, and has an internal transversely disposed tapered through di-fierent sides of the valve seat.

' The upper portion of the casing isformedupper side 0 into a lubricant reservoir 15 having a bot-' tom delivery ort 16 that opens through the the valve seat. The top of the reservoir has a threaded opening 17 nor-IE mally closed by a detachable plug 18.

. Rotatably mounted in,the valve seat 10 is Specification of.I.etters Patent.

valve seat 10 that opens through op osite sideso'f said casing. Right isposed nipples 11 and 12 prothe nipple 12 and said motor.

rangement permits the eaid notor to be set Patented May so, 1911.

I Application filed October 18 1909. Serial No. 523,271.

a tapered throttle valve 19 having a stem 20 projecting from the smaller end of said seat and having an actuating handle 21 suitably secured to it. This valve has its central portion cut away, as shown at 22, forming a passage that may be moved to a position to establish communication between the inlet ports 13 and 14, as shown in Fig. 3, or

to a position to cut ofl' such communication, as illustrated inFig. 2. The valve also has in another side one or more lubricant receiv- I ing pockets 23, and thesepocketsare so arranged that when the valve is in opened position, as shownin Fig. 3, they will communicate with'the lubricant delivery port 16, and when the valve is in closed position, they will be disposed at a downward inclination in communication with the outlet port 14, as shown in Fig. 2. In order to secure a decided downward inclination, the pockets may be disposed tangentially to the axis of rotation of the valve.

In order to permit the necessary turning movement of thevalve and yet prevent its movement sufliciently far to bring the passage 22 into communication with the lubri ed on the exterior of the casing, and operates in a slot 25 formed in the hub of the operating handle, the length of this slot determining the amount of movement the valve may have.) Furthermore in order to at all times intain the valve in properly seated conm ,di kin and take up the wear thereof, the

larger end ofthe valve seat is closed by a plug-"'26 threaded therein which plug is spread from the larger end of the valve, and is preferably chambered, as shown at cant delivery port 16, a stop pin 24: is mount- I '27. The said valve is provided with a longitudinally disposed channel 28 leading from the passage 22 through the larger endof" the valve, and thus conducting fluid under pressure into the chamber 27 g It will be understood that motive fluid under pressure from any suitable source is conducted by suitable means to the inlet 13, andwhile the casing may be con nected to the motor by any well known coupling, preferably said casing is swiveled to the motor. To indicate such aeonnection, attention is called to Fig. 8, wherein a portion of the-motor is illustrated at 29, and. the swjiveled connection 30 is made ibfitween IS an opened, the lubricant Va ve in will gravitate from at any desired angle of inclination, while the casing may be kept in vertical position.

The operation forth is-as follows. As is well known, in the use of drilling machines, the motive fluid is ordinarily cu ofi' and turnedon at frequent intervals, necessitating the turning of the controlling valve. In this struc ture, when the valve is opened, the lubricant receiving pockets register with the delivery port of 'the lubricant reservoir, as

shown 1n Fig. 3. When the valve is closed, these pockets are brought to ,a downward inclination in communication with the out-- let port 14, .and consequently the lubricant the pockets into the As soon asqthe valve is again will be carried by the motive fluid into the machine. Thus a simple and .practicable structure is produced for not only controlling'the "supply of motive fluid to a motor but incidentally and automatically supplying lubricant to such motor in,,'an economical form, and yet. in s'uflicient quantities to insure lubrication of the working parts of the ap status. This structure also keeps the properly" lubricated condition,

said port.

- reducing wear thereon, and at the same From the foregoing,

time, said valve is maintained in properly seated condition, and whatever wear there is, is taken up by the air pressure against the largerend.

it is thought that the construction, operation; and many advaninvention will apparent to those skilled in the art, with.-

-out further. description, and it will be understood that various changes 'in the size,

shape, proportion and minor details of con-vv struction may be resorted to" withinthe scope of the claims without departmg' from the spirit ,or sacrificing any-of the advantages of the invention."

Having thus fully described my invention, whatI claim'as new, and desire to secure by Letters Patent, is v 1 1. In a deviceof the character set forth,

a casing having a eating, with difierent sides ofsaid seat at p of the structure briefly set the proper in presence 0 two witnesses.-

substantially right angles to each other and alubricant reservoir having a delivery port communicating with still the valveseat and in the same plane as the inlet and outlet ports, of a rotary valve located in the casing in the seat and having a transverse channel that ismovabl e to a position to connect the inlet and outlet ports and to a position to cut oil communication between said ports, said valve also having a lubricant receiving and delivery pocket that moves into communication with the resercommunication with the outlet port when the valve, is in closed'position, and means for limiting the rotation of the valve to pre- .of communication with the reservoir port and the outlet port accordingly as the valve is moved to opened and closed position.

a casing having right angularly disposed inlet and outlet ports, a reservoir having a delivery port in the casing in a plane inter-- secting the inlet and outlet ports, and a rotary closing communication outlet ports, said valve having a lubricantreceiving and delivery pocket provided with moves into communic io voirport when the. val e is opened land into communication with the outlet port when the valve is closed. 1

l DANIEL s'. WAUGH. Witnesses: W. H. LEONARD,

voir port when the valve is open and into vent the channel therein moving into com- 3. Ina devicev of the characterset forth,

a closed bottom andan open mouth that" withv the reser- In testimon whereof, I afliklmy signature adiflferent side of mouth that alternately moves illto and out valve in the casing for opening and between the inlet and 

